geordie613: While I know who to contact, I have taken the position that when in my house you have to follow what I do. Once married and in your own dwelling you can follow your rabbeim.
There’s a famous picture from one of the Agudah conventions that shows Rav Schwab TZATZAL sitting reciting havdallah and Rav Schwadron standing and listening.
I grew up with my father following his minhagim from his home. However, if he did not a specific minhag for something he adopted the minhag of my maternal grandfather.